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Study on Normal Mode Helical Antennas

Research Project

Project/Area Number 05452207
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 情報通信工学
Research InstitutionMusashi Institute of Technology

Principal Investigator

SEKIGUCHI Toshio  Musashi Inst.of Technol., Professor, 工学部・電子通信工学科, 教授 (30016224)

Co-Investigator(Kenkyū-buntansha) ABE Minoru  Musashi Inst.of Technol., Associate Professor, 工学部・電子通信工学科, 助教授 (20061541)
Project Period (FY) 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1993: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsHelical Antennas / Normal Mode Helical Antennas / Magnetic Current Antennas / Array Antennas / Low-profile Antennas / Small Antennas
Research Abstract

Antennas for mobile or portable radio communication systems are required to be small and low-profile structures. When the diameter of helical antenna is shorter than 1/10 times of wave length, it acts as a magnetic current antenna and an image current of this magnetic current is same phase for a conducting plane. In order to get a large directivity, the antenna systems are desirable to be array structures and sequencial excitation. To get a fundamental design of the helical antennas which have the above mentioned characteristics, the current distributions on the antennas, particularly phase constant, must be obtained exactly and clearly. In this paper, the current distributions of the arbitraly diameter pitch length thickness of spacer etc. are obtained by experiments and numerical analysis appling the Improved Circuit Theory. Instead of the circular helical antennas, triangular and rectangular helical antennas are also investigated. And in order to get more low-profile antenna system, we studied the current distributions of the circular, triangular and rectangular helical antennas which are burried in a each trough on the conducting plane.

Report

(2 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 関口利男他: "磁流アンテナに関する研究" 電子情報通信学会:信学技報. AP92. 63-70 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 関口利男他: "磁流アンテナの電流分布に関する研究" 電子情報通信学会春季大会講演論文集. 2. 2-122 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 関口利男他: "導体内に設けた半円筒溝内の平面波に対する電磁界" 電子情報通信学会春季大会講演論文集. 2. 2-537 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Fujioka, M.Abe, T.Sekiguchi: "Studies on Magnetic Current Antennas" Proceedings of the 1992 IEICE.Fall Conference. P.B-68. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Abe, S.Fujioka, T.Sekiguchi, T.Uwano: "Studies on the Magnetic Current Antennas" Tecnical Report of IEICE.A.P92-143. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Uesaka, M.Abe, T.Sekiguchi, T.Uwano: "Studies on Current Distributions on a Normal Mode Helical Antenna" Proceedings of the 1994 IEICE.Spring Conference. P.B-112. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Suzuki, M.Abe, T.Sekiguchi: "Electromagnetic Fields in Semi-Circular trough on Conductor by plane wave - Application of Normal Mode Helical Antennas to Low-profile Antennas -" Proceedings of the 1994 IEICE Spring Conference. P.C-32. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 関口利男他: "磁流アンテナに関する研究" 電子情報通信学会:信学技報. AP92. 63-70 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 関口利男他: "磁流アンテナの電流分布に関する研究" 電子情報信学会春季大会講演論文集. 2. 2-122 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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